De-interlacing problem

[Tanman]

I've tried all the de-interlacing options in the gb-pvr config program, but I'm still getting bad combing. Is this a glitch with my Hauppauge PVR150, my system configuration, or GB-PVR?

[stefan]

Do the recordings look like that if you play them in WMP or any other player?

[chud]

i don't think it is your PVR150. it will output an interlaced mpeg2 stream. i have generally found that the most cpu-friendly way to deinterlace is set the gbpvr deinterlacing option to "encoder pass-through" and use either the video codec or the video card driver/hardware.

maybe some of your setup details will help. which codec are you using? what video card to you have?

[capone]

There are deinterlacing options in GB?

That looks more like the decoder. I get that effect if I try to use the nVidia decoder w/ HW acceleration in VMR9 (works great in overlay, but I like vmr). Either that, or some post-processor w/ too many filters on.

Try overlay if you are using VMR9. That will lower the overhead.

[chud]

i have almost 0 combing artifacts with VMR9, nvidia dec w/ DXVA, ati 9600 cat 5.11. deinterlacing is performed in hardware by the video card.

there are deinterlacing options in the GBPVR config under the MISC tab.

getting decent deinterlacing can be tricky. if you want to verify that your problem is that you are indeed just looking at an interlaced picture, i would enable the ffdshow post-processing (under the PLAYBACK tab in GBPVR config, must of course have ffdshow installed) and in the ffdshow config enable deinterlacing to something obvious like linear interp. it is a cpu hog and your video may stutter badly depending on your cpu, but you should no longer feel like you are at the school of hairstyling... (bad comb joke there...)

[capone]

Ah...I do all TS, so I never noticed.

I found you don't need the check for ffdshow if it's set up right.

[wannabepvr]

This may not be of any help. But in may experience this 'tearing' usually occurs when the frames top/bottom are in the wrong order and when an object is fast moving.

I have only ever seen this when I was using an old BT878 analogue capture card. I don't no anything about the hauppauge but on some devices you can designtate which frame is first.